Unit 6 Exam HC F24

Front

What makes up most of the mass in an atom?

Back

Protons and neutrons.

Front

What varies between isotopes of an element?

Back

Neutrons and atomic mass.

Front

Which isotope of lead is likely to be the most abundant?

Back

Lead-207.

Front

What is a serious risk factor associated with nuclear power plants?

Back

Production of radioisotopes with long half-lives.

Front

Which element can initiate nuclear fission reactions?

Back

Plutonium.

Front

What are protons?

Back

Positively charged particles found in the nucleus of an atom.

Front

What are neutrons?

Back

Neutral particles found in the nucleus of an atom.

Front

What is an isotope?

Back

Atoms of the same element with different numbers of neutrons.

Front

What is atomic mass?

Back

The weighted average mass of an element's isotopes.

Front

What is nuclear fission?

Back

The process of splitting a heavy nucleus into smaller nuclei, releasing energy.